[TASK] Remove DB Connection check in Frontend Requests

[TASK] Remove DB Connection check in Frontend Requests

The check if the pages table is accessible is removed.

In TYPO3 v9 this was right after the TSFE creation due to 100%
backwards-compatibility in terms of previous code which has now
vanished (a legacy hook).

This change removes the database initialization check as it is done
already anyway earlier in Bootstrap.

Resolves: #88481
Releases: master
Change-Id: I7ca0c068ece433e9c545163121373b0de2af086d
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60866
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Stefan Froemken <froemken@gmail.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Stefan Froemken <froemken@gmail.com>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>